Steel 08KH20N14S2 (ЭИ732)

Designation

08KH20N14S2 steel is used: for the manufacture of pipes; details of pipeline valves; parts of machinery and special equipment.

Austenite heat-resistant steel-ferritic class.
Temperature intense scaling in air 1000−1050 °C.
Resistant to carburizing environments.

Name	Code	Standards
Classification, nomenclature and general norms	В30	GOST 5632-72
Sectional and shaped rolling	В32	GOST 5949-75, TU 14-11-245-88
Pipes steel and connecting parts to them	В62	GOST 9940-81, GOST 9941-81, TU 14-3-1654-89
Bulls. Blanks. Slabs	В31	OST 3-1686-90, TU 14-1-565-84

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	V	Ti	Mo	W
GOST 5632-72	≤0.08	≤0.025	≤0.035	≤1.5	19-22	2-3	12-15	The rest	≤0.3	≤0.2	≤0.2	≤0.3	≤0.2

Fe is the basis.

Section, mm	s_T\|s_0,2, MPa	σ_B, MPa	d₅, %	y, %	kJ/m², кДж/м²
Bars hot rolled and forged according to GOST 5949-75. Annealing in air 1000-1150 °C
	≥245	≥540	≥40	≥50	≥981
Seamless hot deformed tubes in the delivery condition according to GOST 9940-81
	-	≥510	≥35	-	-

Name	Description
Section	Section
s_T\|s_0,2	Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σ_B	Limit short-term strength
d₅	Elongation after rupture
y	The relative narrowing
kJ/m²	Toughness